Little Dragon and (I think) Jim Burton has bot made scenes with loads and loads of Poser characters, all in one scene. In Poser. It can be done. The trick is to find some relatively low poly figures. Don't expect to be able to load 100 V3's into Poser. But 100 Posette could be possible, depending of course of your computer and how much RAM you have.

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.